alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Nexus Stealer CnC Data Exfil"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; endswith; http.user_agent; content:!"Mozilla"; http.request_body; content:"{"; startswith; content:"|7e 3b 5e 3b|Windows|20|"; within:50; fast_pattern; content:"|7e 3b 5e 3b|"; distance:0; content:"|7e 3b 5e 3b|"; distance:0; content:"|7e 3b 5e 3b|"; distance:0; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:md5,8bd8582155ef003b8a24d341d75f1d7f; classtype:command-and-control; sid:2029298; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_01_21, deployment Perimeter, deprecation_reason Age, malware_family Nexus, confidence High, signature_severity Major, updated_at 2024_04_27, reviewed_at 2023_12_27;)